richard j. davidson has tried to answer these questions. he's discovered we're all composed of six emotional styles. emotional styles. he's been able to trace these styles to patterns of neural activity, that's the crucial link. a new book "the emotional life of your brain" considers how these patterns affect the way we live and other strategists to change them. joining me the book's authors richard j. davidson, a professor of psychiatry at the university of wisconsin madison and sharon begley, the science editor at ritders. i'm pleased to have both of them at this table. this is a continuation of our series which we call "brain watch." as we look often at the extraordinary developments in understanding the brain as the most exciting frontier of human insights. so welcome. >> thank you so much. >> rose: tell me about what it is that you have discovered and this connection between emotional style and being able to see it in terms of neural activity. >> well, first, one of the most salient characteristics is that people respond to life's slin